Chem7 - Acids and Bases Flashcards
1
Q
for a titration of a strong acid w/ weak base youd need an indicator functioning at pH:
A
7
2
Q
what is the Kw for water at STP?
A
10-14
3
Q
how many protons are removed after 3 equivalence points
A
3
4
Q
high pKa means
A
weak acid
5
Q
low pKa means
A
MORE acidic
6
Q
how does the addition of oxygens to a molecule affect pKa/acidity?
A
pKa decreased and acidity INCREASED
7
Q
what is a bronstead-lowry acid?
A
proton DONOR
8
Q
what is a bronstead-lowry base?
A
proton ACCEPTOR
9
Q
at the half equivalence point pH is equal to
A
pKa
10
Q
what is the equation for Ka?
A
[H+][A-]/[HA]
11
Q
what is an arrhenius acid/base?
A
releases H+/releases OH-
12
Q
pKa=
A
NAME?
13
Q
the maximum buffering capacity of a solution is when
A
[base]=[acid]
14
Q
what is the henderson hasselbach equation?
A
ph=pka+log(base/acid)
